Vibrational kinetics of the ozone molecule in binary mixtures with noble gases

Olga Y. Nikiforova; Yurii N. Ponomarev; Boris A. Tikhomirov; V. Zeninari; D. Courtois

doi:10.1117/12.336993

13 January 1999 Vibrational kinetics of the ozone molecule in binary mixtures with noble gases

Olga Y. Nikiforova, Yurii N. Ponomarev, Boris A. Tikhomirov, V. Zeninari, D. Courtois

Proceedings Volume 3583, Fifth International Symposium on Atmospheric and Ocean Optics; (1999) https://doi.org/10.1117/12.336993
Event: Fifth International Symposium on Atmospheric and Ocean Optics, 1998, Tomsk, Russian Federation

Abstract

The vibrational translational relaxation time of 001 state of ozone in binary mixtures with noble gases (He, Ne, Ar, Kr, Xe) was measured from the phase shift of the photoacoustic signal relative to the amplitude-modulated radiation of the CO₂ laser used for excitation of O₃. A three-level kinetic model of O₃ is used to fit the experimental and calculational data of the phase shift and to determine the vibrational relaxation rate coefficient. The vibrational relaxation rate constants for 001 state were obtained corresponding to the deexcitation by the direct way of the 000 state and in two steps through the 010 state. Dependences of the relaxation rate constants on molecular mass and polarizability of buffer gas are presented. Estimates of vibrational relaxation rate constants in the Landau-Teller approximation for various molecular masses and polarizabilities of buffer gas were performed.

Citation Download Citation

Olga Y. Nikiforova, Yurii N. Ponomarev, Boris A. Tikhomirov, V. Zeninari, and D. Courtois "Vibrational kinetics of the ozone molecule in binary mixtures with noble gases", Proc. SPIE 3583, Fifth International Symposium on Atmospheric and Ocean Optics, (13 January 1999); https://doi.org/10.1117/12.336993

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